Locking mechanism and cab rear suspension device

Abstract

The embodiment of the utility model provides a locking mechanism and a cab rear suspension device, and relates to the technical field of vehicles. The locking mechanism comprises a lock shell, a first lock hook and a second lock hook. The second lock hook is detachably connected with the first lock hook; when the second lock hook and the first lock hook are fixed, the first lock hook is used for being locked with the lock bolt. When the second lock hook is separated from the first lock hook, the first lock hook is used for being separated from the lock bolt. The lock further comprises a tension piece which can drive the second lock hook to move so that the second lock hook can be separated from the first lock hook. Through the arrangement of the tension piece, a worker can operate the tension piece to drive the second lock hook to move, then unlocking of the first lock hook and the lock bolt is achieved, a mode capable of achieving unlocking between the first lock hook and the second lock hook is added, and the worker only needs to pull the tension piece. Therefore, the first lock hook and the lock bolt can be quickly unlocked, the follow-up cab vehicle body overturning operation is facilitated, and the maintenance efficiency of the whole vehicle is improved.

Description

Technical Field

[0001] This application relates to vehicle technology, and more particularly to a locking mechanism and a rear suspension device for the driver's cab. Background Technology

[0002] The engine and other important components of heavy-duty trucks are located on the frame under the cab. Based on the need for daily inspection and maintenance space, the vehicle needs to be equipped with a tilting system to tilt the cab to a certain angle, thereby meeting the needs of maintenance and disassembly of important components such as the engine.

[0003] In the prior art, the tipping system of a heavy truck includes a bolt, a hook, and a lifting mechanism. The bolt is installed on the cab body; the hook is integrated with the rear suspension device of the cab and is installed on the frame together. The hook can lock with the bolt to fix the cab body to the frame; the movable end of the lifting mechanism is connected to the body, and the cab can be tipped under the thrust of the lifting mechanism. During the tipping process, the locking of the hook and bolt must first be released to disengage the bolt from the hook, thereby unlocking the body from the frame. Then the lifting mechanism acts on the cab body to tip the cab body.

[0004] However, in some application scenarios, the unlocking operation of the lock hook and bolt is inconvenient, affecting the overall vehicle maintenance efficiency. Utility Model Content

[0005] In view of this, this application provides a locking mechanism and a rear suspension device for the cab, which can realize the quick unlocking of the locking hook and the locking bolt, thereby facilitating the quick unlocking between the cab body and the frame, facilitating the cab body to be tilted, and improving the maintenance efficiency of the whole vehicle.

[0006] To achieve the above objectives, this application provides a locking mechanism and a rear suspension device for the driver's cab, which adopts the following technical solution:

[0007] In a first aspect, this application provides a locking mechanism, comprising:

[0008] Lock case;

[0009] The first locking hook is movably disposed within the lock housing;

[0010] The second locking hook is movably disposed within the lock housing, and the second locking hook is detachably connected to the first locking hook;

[0011] When the second locking hook is connected to the first locking hook, the first locking hook is used to lock with the bolt; when the second locking hook is disengaged from the first locking hook, the first locking hook is used to disengage from the bolt.

[0012] A tension member is connected to the second locking hook, and the tension member can drive the second locking hook to move so that the second locking hook disengages from the first locking hook.

[0013] In one possible implementation, the locking mechanism provided in this application includes a mounting portion and a movable portion as the tension member;

[0014] The mounting part is disposed on the lock housing; the movable part is movably connected to the mounting part, and the movable part is connected to the second lock hook.

[0015] In one possible implementation, the locking mechanism provided in this application has a mounting part having a limiting hole, and the movable part passing through the limiting hole and being able to move along the length direction of the limiting hole.

[0016] In one possible implementation, the locking mechanism provided in this application includes a pull ring, a connecting rod, and a fixing head as the movable part;

[0017] The connecting rod passes through the limiting hole, with its first end connected to the pull ring and its second end connected to the fixing head.

[0018] The fixing head is connected to the second locking hook.

[0019] In one possible implementation, the locking mechanism provided in this application further includes a mounting plate, and the mounting part is connected to the lock housing through the mounting plate.

[0020] In one possible implementation, the locking mechanism provided in this application has a slot on the mounting plate, and the mounting part is disposed in the slot;

[0021] The mounting part has a first abutting surface and a second abutting surface, the mounting part abuts against the first surface of the mounting plate through the first abutting surface, and the mounting part abuts against the second surface of the mounting plate through the second abutting surface.

[0022] In one possible implementation, the locking mechanism provided in this application has a second locking hook having a main body, and a snap-fit ​​portion and a connecting portion disposed on the main body;

[0023] The main body is rotatably connected to the lock housing, and the snap-fit ​​part is fixed to or detached from the first lock hook;

[0024] The connecting part is connected to the tension member, and the connecting part can rotate under the tension of the tension member.

[0025] In one possible implementation, the locking mechanism provided in this application includes a fixed head as the tension member;

[0026] The connecting part has a rotating groove, and the fixing head is rotatably disposed in the rotating groove.

[0027] In one possible implementation, the locking mechanism provided in this application further includes a relief groove in the connecting portion, which communicates with the rotating groove, and the width of the relief groove is smaller than the diameter of the fixing head.

[0028] The tension member includes a connecting rod, which passes through the relief groove and is connected to the fixing head;

[0029] When the second locking hook rotates, the connecting rod moves within the relief groove.

[0030] Secondly, this application also provides a cab rear suspension device, including a body end and a frame end, as well as the aforementioned locking mechanism;

[0031] The body end is used to connect with the cab body, the frame end is used to connect with the frame, the body end has a locking bolt, and the locking mechanism is disposed on the frame end;

[0032] The locking mechanism can lock and disengage from the bolt to lock and disengage the vehicle body end and the vehicle frame end.

[0033] The locking mechanism and rear suspension device for the cab provided in this application include a lock housing, a first locking hook, and a second locking hook. The first locking hook is movably disposed within the lock housing; the second locking hook is also movably disposed within the lock housing, and the second locking hook is detachably connected to the first locking hook. When the second locking hook is connected to the first locking hook, the first locking hook is used to lock with the bolt; when the second locking hook is disengaged from the first locking hook, the first locking hook is used to disengage from the bolt. The locking mechanism also includes a pulling member connected to the second locking hook. The pulling member can drive the second locking hook to move, thereby disengaging the second locking hook from the first locking hook. Thus, by providing the pulling member, the operator can operate the pulling member to move the second locking hook, thereby unlocking both the first and second locking hooks, achieving rapid unlocking of the first locking hook and the bolt. Compared to traditional methods, this adds another unlocking method between the second and first locking hooks: the operator simply pulls the pulling member. In application scenarios where a tilting system is not installed, or where the tilting system or hydraulic system fails, it can quickly unlock the first locking hook and bolt, facilitating subsequent cab tilting operations and improving the overall vehicle maintenance efficiency.

[0034] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the technical solutions provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0035] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this application, and this application is not limited to the specific embodiments described below.

[0036] Figure 1 A partial structural diagram of the cab rear suspension device provided in this application when it is installed on a vehicle;

[0037] Figure 2 A structural schematic diagram of the vehicle body end of the cab rear suspension device provided in this application;

[0038] Figure 3 A structural schematic diagram of the frame end of the cab rear suspension device provided in this application;

[0039] Figure 4 Schematic diagram of the locking mechanism provided in this application Figure 1 ;

[0040] Figure 5 Schematic diagram of the locking mechanism provided in this application Figure 2 ;

[0041] Figure 6 A schematic diagram illustrating the structure for unlocking or disengaging the locking mechanism and bolt provided in this application;

[0042] Figure 7 A structural schematic diagram of the tension member provided in this application;

[0043] Figure 8 Schematic diagram of the lock case provided in this application Figure 1 ;

[0044] Figure 9 Schematic diagram of the lock case provided in this application Figure 2 ;

[0045] Figure 10 Schematic diagram of the structure of the second locking hook provided in this application Figure 1 ;

[0046] Figure 11 Schematic diagram of the structure of the second locking hook provided in this application Figure 2 .

[0047] Explanation of reference numerals in the attached figures:

[0048] 10. Body end; 20. Frame end; 100. Lock housing; 200. First lock hook; 300. Second lock hook; 310. Main body; 320. Snap-fit ​​part; 330. Connecting part; 3301. Rotating groove; 3302. Relief groove; 400. Tensioning component; 410. Mounting part; 4101. Limiting hole; 4102. First abutment surface; 4103. Second abutment surface; 420. Movable part; 421. Pull ring; 422. Connecting rod; 423. Fixing head; 500. Mounting plate; 501. Slot; 600. Hydraulic component; 700. Torsion spring.

[0049] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0051] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise specified precisely.

[0054] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0055] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0056] With the rapid development of the social economy, truck sales have shown a steady growth trend, with the demand for heavy-duty trucks also rising sharply. The mainstream heavy-duty truck models still use flat-nose cabs, with important components such as the engine located under the chassis below the cab floor. Based on the need for daily inspection and maintenance space, the entire vehicle needs to be equipped with a tilting system to allow the cab to tilt to a certain angle to meet the maintenance and disassembly of systems such as the engine and cooling module.

[0057] In traditional designs, the locking mechanism of the tilting mechanism consists of two parts: a bolt and a hydraulic lock. The hydraulic lock contains a locking hook and is integrated with the rear suspension of the cab. The bolt and the hydraulic lock are respectively fixed to the body end and frame end of the rear suspension of the cab. During the tilting process, the hydraulic lock first needs to use the vehicle's hydraulic system to drive the locking hook to move, thereby unlocking the locking hook from the bolt. Then, the lifting mechanism in the tilting system, under the power of the hydraulic system, disengages the body end of the rear suspension of the cab from the frame end. The cab body rotates around the tilting axis of the front suspension of the cab, and after reaching a set angle, the tilting and lifting are completed. The tilting and falling process of the cab body is similar. Under the combined action of the lifting mechanism and the weight of the cab, the cab body returns to its initial position, and the weight of the cab locks the bolt and the locking hook in the hydraulic lock.

[0058] In the booming electrification of the automotive industry, electric heavy-duty trucks, as a solution to replace traditional fuel-powered heavy-duty trucks, offer advantages such as zero emissions and low noise, and are expected to play a positive role in achieving the green transformation of the transportation sector. With the rapid development of electric heavy-duty trucks, their power systems differ from traditional fuel-powered vehicles, primarily consisting of battery packs and electric motors. These components are typically smaller and more compact, potentially eliminating the need for cab tilting for maintenance. Therefore, from a technical perspective, the cab tilting angle requirement for electric heavy-duty trucks can be significantly reduced. Traditional cab tilting angles are between 50° and 70°, while electric heavy-duty trucks can operate without cab tilting or with only a small tilt angle.

[0059] Based on the above considerations, when developing new heavy-duty trucks, different configurations need to be differentiated regarding whether a cab tilting system is required. For example, traditional fuel-powered and methanol-powered trucks need to retain the tilting mechanism, while pure electric trucks can eliminate the tilting mechanism to further reduce weight and costs.

[0060] In traditional tipping systems, the lifting mechanism relies on a hydraulic system for power. Eliminating the tipping mechanism in heavy-duty trucks means the hydraulic system can also be eliminated. However, considering the platformization and maneuverability of the suspension structure, the front and rear suspension systems remain unchanged. This raises a new problem: how to unlock the hydraulic lock integrated with the rear suspension. In vehicles with a tipping mechanism, the hydraulic lock is opened by hydraulic pressure. However, in vehicles where the tipping mechanism is eliminated but a small-angle cab tilt is required via an overhead crane, the quick disassembly and assembly of the rear suspension frame end and body end becomes a time-consuming and labor-intensive task. This makes unlocking the lock hooks and bolts inconvenient, ultimately affecting the overall vehicle maintenance efficiency.

[0061] Based on the aforementioned technical problems, this application provides a locking mechanism and a rear suspension device for the driver's cab. In this technical solution, the locking mechanism includes a lock housing, a first locking hook, and a second locking hook. The first locking hook is movably disposed within the lock housing; the second locking hook is movably disposed within the lock housing, and the second locking hook is detachably connected to the first locking hook. When the second locking hook is connected to the first locking hook, the first locking hook is used to lock with the bolt; when the second locking hook is disengaged from the first locking hook, the first locking hook is used to disengage from the bolt. The locking mechanism also includes a pulling member connected to the second locking hook. The pulling member can drive the second locking hook to move, thereby disengaging the second locking hook from the first locking hook. Thus, by providing the pulling member, the operator can operate the pulling member to move the second locking hook, thereby unlocking the first and second locking hooks, and unlocking the first locking hook from the bolt, achieving rapid unlocking of the first locking hook and the bolt. Compared to traditional methods, this adds a new unlocking method between the second and first locking hooks: the operator simply pulls the pulling member. In application scenarios where a tilting system is not installed, or where the tilting system or hydraulic system fails, it can quickly unlock the first locking hook and bolt, facilitating subsequent cab tilting operations and improving the overall vehicle maintenance efficiency.

[0062] It should be noted that, Figures 1 to 11 The diagram shows a simplified representation of the components in the locking mechanism and the rear suspension system of the cab. The specific structures of the remaining components in the locking mechanism and the rear suspension system of the cab are not limited to these examples. Figures 1 to 11 of examples.

[0063] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0064] Reference Figures 1 to 11 As shown in the figure, a locking mechanism provided in this application includes a lock housing 100, a first locking hook 200, and a second locking hook 300. The first locking hook 200 is movably disposed within the lock housing 100; the second locking hook 300 is movably disposed within the lock housing 100, and the second locking hook 300 is detachably connected to the first locking hook 200. When the second locking hook 300 is fixed to the first locking hook 200, the first locking hook 200 is used to lock with the bolt; when the second locking hook 300 is disengaged from the first locking hook 200, the first locking hook 200 is used to disengage from the bolt. Those skilled in the art will understand that when the bolt is locked to the first locking hook 200, the first locking hook 200 and the second locking hook 300 are fixed, and the second locking hook 300 has a fixing and limiting function on the first locking hook 200, preventing the first locking hook 200 from moving or rotating, thereby preventing the first locking hook 200 from disengaging from the bolt; as... Figure 6 As shown, when Figure 6When the second locking hook 300 moves to the position indicated by the dotted line, the locking state between the second locking hook 300 and the first locking hook 200 ends. At this time, the first locking hook 200 is released from its fixed state and can rotate or move under the action of the bolt. Figure 6 The dashed line indicates the position of the first locking hook 200, thus enabling the first locking hook 200 to disengage from the bolt. The second locking hook 300 has a torsion spring 700, which allows the second locking hook 300 to return to its original position after the first locking hook 200 disengages. At this point, when the bolt moves towards the first locking hook 200, it first compresses the first locking hook 200, and the first locking hook 200 compresses the second locking hook 300. After overcoming the elastic force of the torsion spring 700, the bolt locks with the first locking hook 200. The torsion spring 700 then fixes the second locking hook 300 to the first locking hook 200, preventing the first locking hook 200 from moving, thus achieving the locking of the first locking hook 200 with the bolt.

[0065] Reference Figures 4 to 7 As shown, the locking mechanism also includes a pulling member 400, which is connected to the second locking hook 300. The pulling member 400 can move the second locking hook 300 to disengage it from the first locking hook 200. In the above embodiment, by setting the pulling member 400, when unlocking is required, simply pulling the pulling member 400 will move the second locking hook 300 to disengage it from the first locking hook 200, thereby unlocking the first locking hook 200 from the bolt. This operation method is relatively simple and direct, requiring no complicated operating procedures or special tools, greatly improving the convenience of unlocking and helping to improve maintenance efficiency. Compared with the traditional setting method, this adds another unlocking method between the second locking hook 300 and the first locking hook 200, namely, the worker can simply pull the pulling member 400. Of course, workers can pull the pulling component 400 manually or with the aid of other tools. This embodiment does not restrict how the pulling component 400 is driven. When workers manually pull the pulling component 400, the use of tools can be reduced, improving maintenance efficiency. In application scenarios where a tilting system is not installed, or where the tilting system or hydraulic system fails, the first locking hook 200 and the locking bolt can be quickly unlocked, facilitating subsequent cab tilting operations and improving overall vehicle maintenance efficiency.

[0066] In one possible implementation, please continue to refer to Figures 4 to 7 As shown, the tension member 400 includes a mounting part 410 and a movable part 420.

[0067] Mounting part 410 is provided on lock housing 100; movable part 420 is movably connected to mounting part 410 and is connected to second lock hook 300.

[0068] In the above embodiments, the lock case 100 is what a person skilled in the art would think of. It mainly provides the installation position for the first lock hook 200 and the second lock hook 300, and provides necessary protection for the first lock hook 200 and the second lock hook 300. The specific structure of the lock case 100 is not limited in the embodiments of this application.

[0069] By clearly defining the mounting part 410 and the movable part 420, and directly connecting the movable part 420 to the second locking hook 300, the pulling force can be transmitted more directly and accurately to the second locking hook 300. The mounting part 410 is fixed to the lock housing 100, providing a stable support point for the entire pulling force transmission process, reducing force loss caused by unstable connection, and ensuring that the pulling force can effectively act on the second locking hook 300, allowing it to move smoothly and disengage from the first locking hook 200, thereby improving the reliability and efficiency of unlocking.

[0070] In one possible implementation, the mounting part 410 has a limiting hole 4101, and the movable part 420 passes through the limiting hole 4101 and can move along the length direction of the limiting hole 4101. By providing the limiting hole 4101, the movable part 420 can make precise linear movements along the length direction of the limiting hole 4101. This makes the pulling force applied by the pulling member 400 to the second locking hook 300 more stable and accurate, ensuring that the second locking hook 300 can move smoothly along the predetermined trajectory, thereby accurately disengaging from the first locking hook 200. This helps to improve the reliability and stability of the locking mechanism unlocking and reduces the risk of failure due to inaccurate operation. In addition, the existence of the limiting hole 4101 restricts the range and direction of movement of the movable part 420, allowing it to move only within a specified track. This effectively reduces the shaking and swaying of the movable part 420 and improves the stability of operation. At the same time, stable operation can also reduce the impact on other components, extend the service life of the entire locking mechanism, and reduce the maintenance cost of the equipment.

[0071] In one possible implementation, the movable part 420 includes a pull ring 421, a connecting rod 422, and a fixing head 423.

[0072] The connecting rod 422 passes through the limiting hole 4101. The first end of the connecting rod 422 is connected to the pull ring 421, and the second end of the connecting rod 422 is connected to the fixing head 423.

[0073] The fixing head 423 is connected to the second locking hook 300.

[0074] In the above embodiments, by setting the pull ring 421 as the operating component, its shape and size can better adapt to the operator's natural grip posture, making the operator more comfortable and less strenuous when pulling. Alternatively, the pull ring 421 provides a more convenient operating point for moving the movable part 420. Simultaneously, the design of the connecting rod 422 ensures that the pulling force is evenly transmitted to the second locking hook 300, allowing the operator to unlock the locking mechanism with less force, further improving the convenience and comfort of operation and reducing the operator's labor intensity. Especially during frequent maintenance operations, a good operating feel can significantly improve work efficiency. In this embodiment, the pull ring 421, connecting rod 422, and fixing head 423 are connected sequentially, resulting in a relatively simple structure that is easy to manufacture and helps reduce costs and increase efficiency.

[0075] In one possible implementation, refer to Figure 8 and Figure 9 As shown, and in combination Figure 4 , Figure 5 and Figure 6 The locking mechanism also includes a mounting plate 500, through which the mounting part 410 is connected to the lock housing 100. By setting the mounting plate 500, the force direction between the mounting part 410 and the lock housing 100 can be optimized. It can be understood that when the movable part 420 is pulled, the force between the movable part 420 and the second locking hook 300 is along the length direction of the movable part 420. However, if the length direction of the limiting hole 4101 in the mounting part 410 is not parallel to or intersects with the length direction of the movable part 420, the movable part 420 will squeeze the mounting part 410. After long-term operation, the mounting part 410 is prone to wear, reducing its service life. By setting the mounting plate 500, the position of the mounting plate 500 can be flexibly set to ensure that the length direction of the mounting part 410 is consistent with the length direction of the movable part 420, avoiding wear between the movable part 420 and the mounting part 410.

[0076] In one possible implementation, the mounting plate 500 has a slot 501, and the mounting part 410 is disposed in the slot 501.

[0077] The mounting part 410 has a first abutting surface 4102 and a second abutting surface 4103. The mounting part 410 abuts against the first surface of the mounting plate 500 through the first abutting surface 4102, and the mounting part 410 abuts against the second surface of the mounting plate 500 through the second abutting surface 4103.

[0078] In the above embodiment, when the first abutting surface 4102 of the mounting part 410 abuts against the first surface of the mounting plate 500, and the second abutting surface 4103 abuts against the second surface of the mounting plate 500, it can ensure that the mounting part 410 remains stable under tension, thereby ensuring that the tension can be accurately and effectively transmitted to the second locking hook 300, improving the unlocking stability and reliability of the locking mechanism, and reducing the risk of failure caused by the unstable position of the mounting part 410. Here, the first surface and the second surface of the mounting plate 500 are arranged opposite to each other. The first abutting surface 4102 abuts against the first surface of the mounting plate 500, and the second abutting surface 4103 abuts against the second surface of the mounting plate 500, which is equivalent to the first abutting surface 4102 and the second abutting surface 4103 clamping the mounting plate 500 between the first abutting surface 4102 and the second abutting surface 4103, improving the stability between the mounting plate 500 and the mounting part 410. Furthermore, the slot 501 is an open slot, which simplifies the installation of the mounting part 410. Simply place the mounting part 410 into the slot 501, ensuring its first contact surface 4102 and second contact surface 4103 contact the surface of the mounting plate 500 to complete positioning. This improves assembly efficiency and facilitates later maintenance and disassembly. When repair is needed, it can be quickly removed from the slot 501 without requiring extensive adjustments to other components. To enhance the quick connection between the mounting part 410 and the slot 501, the slot 501 has an inclined surface on the side facing outwards from the mounting plate 500. This inclined surface guides the mounting part 410, ensuring it engages within the slot 501, further improving assembly convenience.

[0079] In another possible implementation, refer to Figures 4 to 6 As shown, and in combination Figure 10 and Figure 11 The second locking hook 300 has a main body 310, and a snap-fit ​​portion 320 and a connecting portion 330 disposed on the main body 310.

[0080] The main body 310 is rotatably connected to the lock housing 100, and the snap-fit ​​part 320 is fixed or disengaged from the first lock hook 200.

[0081] The connecting part 330 is connected to the tension member 400, and the connecting part 330 can rotate under the tension of the tension member 400.

[0082] In the above embodiment, the locking part 320 and the connecting part 330 are separately arranged. The fixing or disengaging action between the locking part 320 and the first locking hook 200 can be achieved through a simple mechanical structure, such as fixing by designing a suitable inclined surface or arc surface, or fixing the locking part 320 and the first locking hook 200 by designing a locking structure. The connection between the connecting part 330 and the pulling member 400 allows the state of the locking part 320 and the first locking hook 200 to be easily controlled by applying a pulling force. When unlocking is required, simply pull the pulling member 400. The connecting part 330 rotates under the pulling force, causing the locking part 320 to disengage from the first locking hook 200, thereby unlocking the locking mechanism. This design makes the unlocking operation more convenient and faster, improves maintenance efficiency, and reduces the time wasted due to the complexity of the unlocking operation.

[0083] In one possible implementation, the tension member 400 includes a fixed head 423. The connecting portion 330 has a rotating groove 3301, and the fixed head 423 is rotatably disposed within the rotating groove 3301. The fixed head 423 can be a pin, which has a relatively simple structure and helps to reduce costs. Since the fixed head 423 is rotatably disposed within the rotating groove 3301, the fixed head 423 can rotate within the rotating groove 3301 during the rotation of the connecting portion 330, preventing the fixed head 423 from generating torque that could cause breakage between the fixed head 423 and the connecting rod 422, thus improving the stability of the tension member 400.

[0084] In one specific embodiment, the connecting part 330 also has a relief groove 3302, which communicates with the rotating groove 3301, and the width of the relief groove 3302 is smaller than the diameter of the fixing head 423.

[0085] The tension member 400 includes a connecting rod 422, which passes through a relief groove 3302 and is connected to a fixed head 423.

[0086] When the second locking hook 300 rotates, the connecting rod 422 moves within the relief groove 3302.

[0087] Specifically, the clearance groove 3302 has a first part and a second part. The length direction of the first part is consistent with the length direction of the rotation groove 3301, and the second part is connected to the first part. The second part faces... Figure 10 and Figure 11 Extending in the direction indicated by the X arrow, the connecting part 330 rotates in the X direction when rotated, allowing the connecting rod 422 to move within the second part of the relief groove 3302, thus preventing frictional interference between the connecting part 330 and the connecting rod 422. The width of the relief groove 3302 is smaller than the diameter of the fixing head 423. This prevents the fixing head 423 from dislodging from the relief groove 3302 under tension.

[0088] Here, this application provides a cab rear suspension device, including a body end 10 and a frame end 20, as well as the aforementioned locking mechanism.

[0089] The body end 10 is used to connect with the cab body, the frame end 20 is used to connect with the frame, the body end 10 has a locking bolt, and the locking mechanism is set on the frame end 20.

[0090] The locking mechanism can lock and disengage with the bolt to lock and disengage the vehicle body end 10 and the frame end 20.

[0091] The locking mechanism has been described above and will not be repeated here. By installing the cab rear suspension device with the aforementioned locking mechanism, the bolt and the locking mechanism can be quickly disengaged in various application scenarios.

[0092] In one possible implementation, the rear suspension device of the cab may further include a hydraulic component 600, the movable end of which is connected to the connecting portion 330, and the hydraulic component 600 is capable of driving the connecting portion 330 to rotate. It is understood that by providing the hydraulic component 600, the operator can not only operate the second locking hook 300 to rotate via the pulling component 400, but also control the rotation of the second locking hook 300 via the hydraulic component 600, providing more methods for unlocking the second locking hook 300 from the first locking hook 200 and improving convenience.

[0093] The implementation principle of the locking mechanism and the rear suspension device of the cab in this application embodiment is as follows: The locking mechanism includes a lock housing 100, a first locking hook 200, and a second locking hook 300. The first locking hook 200 is movably disposed within the lock housing 100; the second locking hook 300 is movably disposed within the lock housing 100, and the second locking hook 300 is detachably connected to the first locking hook 200; when the second locking hook 300 and the first locking hook 200 are fixed, the first locking hook 200 is used to lock with the bolt; when the second locking hook 300 and the first locking hook 200 are disengaged, the first locking hook 200 is used to disengage from the bolt. The locking mechanism also includes a pulling member 400, which is connected to the second locking hook 300. The pulling member 400 can move the second locking hook 300 to disengage it from the first locking hook 200. Thus, by setting up the pulling member 400, the operator can operate it to move the second locking hook 300, thereby unlocking both the first and second locking hooks, and unlocking the first locking hook 200 from the bolt, achieving rapid unlocking of the first locking hook 200 and the bolt. Compared to traditional methods, this adds an additional unlocking method between the second locking hook 300 and the first locking hook 200—simply by pulling the pulling member 400. In application scenarios where there is no tilting system, or where the tilting system or hydraulic system fails, rapid unlocking of the first locking hook 200 and the bolt can be achieved, facilitating subsequent cab tilting operations and improving overall vehicle maintenance efficiency.

[0094] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein.

[0095] The embodiments in this application are intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0096] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A locking mechanism, characterized in that, include: Lock case; The first locking hook is movably disposed within the lock housing; The second locking hook is movably disposed within the lock housing, and the second locking hook is detachably connected to the first locking hook; When the second locking hook is connected to the first locking hook, the first locking hook is used to lock with the bolt; when the second locking hook is disengaged from the first locking hook, the first locking hook is used to disengage from the bolt. A tension member is connected to the second locking hook, and the tension member can drive the second locking hook to move so that the second locking hook disengages from the first locking hook; The tension member includes a mounting part and a movable part. The mounting part has a limiting hole, and the movable part passes through the limiting hole and can move along the length direction of the limiting hole.

2. The locking mechanism according to claim 1, characterized in that, The mounting part is disposed on the lock housing; the movable part is movably connected to the mounting part, and the movable part is connected to the second lock hook.

3. The locking mechanism according to claim 2, characterized in that, The movable part includes a pull ring, a connecting rod, and a fixing head; The connecting rod passes through the limiting hole, with its first end connected to the pull ring and its second end connected to the fixing head. The fixing head is connected to the second locking hook.

4. The locking mechanism according to claim 1, characterized in that, It also includes a mounting plate, through which the mounting part is connected to the lock housing.

5. The locking mechanism according to claim 4, characterized in that, The mounting plate has a slot, and the mounting part is disposed in the slot; The mounting part has a first abutting surface and a second abutting surface, the mounting part abuts against the first surface of the mounting plate through the first abutting surface, and the mounting part abuts against the second surface of the mounting plate through the second abutting surface.

6. The locking mechanism according to any one of claims 1-5, characterized in that, The second locking hook has a main body, and a snap-fit ​​portion and a connecting portion disposed on the main body; The main body is rotatably connected to the lock housing, and the snap-fit ​​part is fixed to or detached from the first lock hook; The connecting part is connected to the tension member, and the connecting part can rotate under the tension of the tension member.

7. The locking mechanism according to claim 6, characterized in that, The tension member includes a fixed head; The connecting part has a rotating groove, and the fixing head is rotatably disposed in the rotating groove.

8. The locking mechanism according to claim 7, characterized in that, The connecting part also has a relief groove, which communicates with the rotating groove, and the width of the relief groove is smaller than the diameter of the fixing head; The tension member includes a connecting rod, which passes through the relief groove and is connected to the fixing head; When the second locking hook rotates, the connecting rod moves within the relief groove.

9. A rear suspension device for a driver's cab, characterized in that, Includes the body end and the frame end, and the locking mechanism as described in any one of claims 1 to 8; The body end is used to connect with the cab body, the frame end is used to connect with the frame, the body end has a locking bolt, and the locking mechanism is disposed on the frame end; The locking mechanism can lock and disengage from the bolt to lock and disengage the vehicle body end and the vehicle frame end.

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